/* ベース */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f9fafb;  /* 白っぽい背景 */
  color: #111827;       /* 濃いめグレー文字 */
}

/* --- 固定ヘッダー --- */
.minimal-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(229, 231, 235, 0.9);
  z-index: 100;
}

.header-inner {
  max-width: 1040px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-mark {
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  color: #6b7280;
}

.minimal-nav {
  display: flex;
  gap: 20px;
}

.nav-link {
  text-decoration: none;
  color: #374151;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.9rem;
  position: relative;
}

.nav-link.active {
  font-weight: 600;
  color: #111827;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 1px;
  background: #111827;
  transition: width 0.2s ease;
}

.nav-link:hover::after {
  width: 100%;
}

/* --- Hero セクション --- */
.hero-section {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
  padding-top: 60px; /* 固定ヘッダー分 */
}

#sketch-holder {
  position: absolute;
  inset: 0;
}

canvas.p5Canvas {
  display: block;
}

/* コサギ上に名前表示 */
.hero-content {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 0 60px;
}

.hero-label {
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #6b7280;
  margin: 0 0 8px;
}

.hero-name {
  font-family:  "M PLUS 1p", "Hiragino Sans", "Helvetica Neue", sans-serif;
  font-weight: 700;                 /* 少し太めにして自然光の上でも読める */
  font-size: clamp(2.8rem, 6vw, 4rem);
  color: #f5f6f7;                   /* 純白 */
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.35); /* 背景に埋もれないよう影をつける */
  letter-spacing: 0.03em;
  text-align: center;               /* 文字を中央寄せ */
  width: 100%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -120%); /* 画面中央にぴったり配置 */

  .hero-name {
  background: rgba(255, 255, 255, 0.25);
  padding: 8px 16px;
  border-radius: 12px;
  backdrop-filter: blur(6px);
}

}



.profile-heading {
  font-size: 1.8rem;
  margin-bottom: 32px;
  font-weight: 600;
  color: #111827;
  border-left: 6px solid #111827;
  padding-left: 12px;
}

/* 手打ち用文章エリア */
.profile-body {
  font-size: 1rem;
  line-height: 1.9;
  color: #374151;
}

/* --- Works ページ --- */
.works-section {
  background: #ffffff;
  padding: 100px 16px 120px;
}

.works-inner {
  max-width: 960px;
  margin: 0 auto;
}

.section-heading {
  font-size: 1.6rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.work-item img {
  width: 100%;
  border-radius: 8px;
  border: 1px solid #e5e7eb;
  display: block;
}

.work-meta {
  margin-top: 6px;
}

.work-title {
  font-size: 0.95rem;
  color: #111827;
}

/* --- Footer --- */
.minimal-footer {
  text-align: center;
  padding: 0px;
  font-size: 0.8rem;
  color: #9ca3af;
  background: #f9fafb;
  border-top: 1px solid #e5e7eb;
}


/* ===== Profile Section ===== */
.profile-section {
  background: #ffffff;
  padding: 100px 16px 120px;
}

.profile-container {
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.9;
}

/* 見出し（Profile / About Me） */
.section-heading {
  font-size: 1.6rem;
  font-weight: 600;
  margin-top: 60px;
  margin-bottom: 20px;
  color: #111827;
  border-left: 6px solid #111827;
  padding-left: 12px;
}

.profile-attributes p {
  margin: 6px 0;
  font-size: 18px;
  color: #374151;
}

.profile-attributes strong {
  color: #111827;
  font-weight: 600;
}

/* 本文部分 */
.profile-body {
  font-size: 1rem;
  color: #374151;
  margin-top: 16px;
}

/* ===== Links Section ===== */
.links-container {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: flex-start;  /* ★ 左揃えに変更 */
}


.link-button {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 999px; /* 丸みのあるボタン */
  text-decoration: none;
  font-weight: 500;
  letter-spacing: 0.03em;
  font-size: 0.95rem;
  transition: all 0.25s ease;
  border: 1px solid #d1d5db;
  background: #ffffff;
  color: #111827;
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.link-button:hover {
  background: #f3f4f6;
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}

/* OpenProcessingリンク（ホバー時にやや青） */
.op-link:hover {
  border-color: #4285f4;
  color: #4285f4;
}

/* YouTubeリンク（ホバー時にやや赤） */
.yt-link:hover {
  border-color: #ef4444;
  color: #ef4444;
}
/* ===== スクロールで下からふわっと出るアニメーション ===== */
.js-fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.js-fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}
/* ========== Works page layout ========== */

/* ========== Works Page ========== */

.works-page {
  background: #f8f8f8;  /* index.html が白ベースなら、ちょいグレーでメリハリ */
  min-height: 100vh;
}

.works-section {
  padding: 80px 16px 96px;
}

.works-inner {
  max-width: 1080px;    /* Profile の本文幅と揃えるイメージ */
  margin: 0 auto;
}

.section-heading {
  font-size: 2.1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.works-caption {
  color: #666;
  font-size: 0.95rem;
  margin-bottom: 32px;
  line-height: 1.7;
}

/* ---- 3列グリッド ---- */

.works-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)); /* PC で 3 列 */
  gap: 24px;
}

/* タブレット：2列、スマホ：1列 */

@media (max-width: 1024px) {
  .works-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .works-grid {
    grid-template-columns: 1fr;
  }
}

/* ---- 作品カード ---- */

.work-item {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  background: #fff;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid rgba(0, 0, 0, 0.04);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.06);
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.4s ease-out,
    transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 0.22s ease-out,
    border-color 0.22s ease-out,
    background 0.22s ease-out;
  cursor: pointer;
}
/* IntersectionObserver で付けるクラス */
.work-item.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* サムネイル部分 */

.work-thumb {
  position: relative;
  aspect-ratio: 16 / 10;  /* サムネの高さを揃える */
  overflow: hidden;
  background: #f0f0f0;
}

.work-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1);
  transition: transform 0.35s ease-out;
}

/* ホバー時：ふわっとズーム＋カードが軽く浮く */

.work-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.16);
  border-color: rgba(0, 0, 0, 0.14);
  background: #ffffff;
}

.work-item:hover .work-thumb img {
  transform: scale(1.06);
}

/* キーボード操作時も「選択できそう感」を出す */

.work-item:focus-visible {
  outline: 2px solid #000;
  outline-offset: 3px;
}

/* テキスト部分 */

.work-meta {
  padding: 14px 16px 16px;
}

.work-title {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.work-sub {
  display: block;
  font-size: 0.82rem;
  color: #777;
}